I've got a 1998 GMC C1500 Single Cab Long bed. I'm looking to replace my speakers as a few have blown. I've seen some information on the lower door speakers and the lower cab corner speakers. Now, my question is, are there tweeters somewhere I'm not seeing? Crutchfield says there are some on the upper part of the door but I'm not seeing them. I'm wanting to buy some component speakers to replace the old stock ones so any suggestions/advice on a good set would also be helpful.